Within its skin, though, lies the real delight. Its body is carbonfibre composite (left naked beneath the bonnet and bootlid), as is the vast majority of the monocoque chassis beneath. The passenger cell is carbonfibre, as is most of the rear of the car, while 35 percent of the body-in-white is aluminium, including the engine frame and, sensibly, the impact structures to the front and rear, offering sacrificial protection to the carbonfibre tub.